Is this project still under development?

I'm wondering the same thing. I downloaded 6.0.3.0 several months ago and there has been insignificant activity since then. In recent weeks I've been doing a lot of Azure work and using AS Explorer has become a burden due to blocking API calls running
on the UI thread, cumbersome filtering, lack of shortcut keys, no drop support, no metadata support and other UI quirks. Last weekend I used my hobby time write a WPF desktop app for managing Blob Storage and I'm already using it instead of AS Explorer most
of the time, which is not a good omen. A general statement on the future of this project would be welcome.